Consistency of Hearing Aid Setting Preference in Simulated Real-World Environments: Implications for Trainable Hearing Aids.

Participants had symmetrical hearing from normal to moderate loss, so findings may not apply to severe or asymmetrical hearing. The planned sample size was 50 because 70 was not feasible, and power was estimated at 66% for one assumed effect size. The environments were simulated, and the speech lacked the Lombard effect and reverberation, so real-life listening may differ. The hearing aid used was a research master device with less sophisticated processing than most modern commercial hearing aids. All participants received at least 5 dB of amplification at frequencies below target, and some with normal low-frequency hearing received more low-frequency gain than a typical clinical fitting. Comparisons were randomized within each environment, unlike usual fine-tuning where complaints are addressed successively. Participants could listen for as long as they liked, which may have made some evaluations less thorough.

Funded by Australian Government, Department of Health; Australian Government Research Training Program Scholarship; HEARing Cooperative Research Centre. The supplied text gives no author conflict-of-interest declaration.

Do not conclude that trainable hearing aids are ineffective or that fine-tuning should be abandoned. The study measured how consistent people were when choosing between settings in simulated environments; it did not test real-world benefit, device training outcomes, or patient communication outcomes.